Automatic setup carton



NOV. 1953 K. T. BUTTERY AUTOMATIC SETUP CARTON 2 Sheets-Sheet 1 Filed May 19. 1951 Patented Nov. 17, 1953 AUTOMATIC SETUP CARTON Kenneth T. Buttery, Kalamazoo, Mich., assignor to Sutherland Paper Company, Kalamazoo,

Mich.

. Application May 19, 1951, Serial No. 227,203

7 Claims. (01. 229-39) This invention relates to improvements in automatic setup cartons.

The main objects of this invention are:

First, to provide a collapsible carton of the automatic erecting type in which the bottom members or parts are automatically swung to erected position on the erecting of the side walls and are capable of sustaining a substantial load when erected.

Second, to provide a collapsible carton which may be automatically erected by pressure on opposite edges of ,the collapsed carton and the parts are positively moved to erected position with the bottom parts in interlocking relationship to support the bottom and to support the walls against racking or collapsing stresses.

Third, to provide a structure having these advantages which may be formed of a single blank.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

Fig. 1 is a bottom perspective view of a carton embodying my invention in erected position.

Fig. 2 is a side elevational view.

Fig. 3 is a horizontal section on a line corresponding to line 33 of Fig. 1.

Fig. 4 is a bottom view illustrating the carton in partially erected position.

Fig. 5 is a plan view of the blank in fully extended position or in the fiat.

Fig. 6 is a fragmentary View of the carton partially folded with certain of the adhesive areas indicated.

Fig. 7 is a side view of the collapsed carton of the embodiment of my invention of Figs. 1 to 7, inclusive.

In the specification and certain of the claims, I use the terms side and end members but it will be understood that they are terms of convenience in describing and designating the parts and not terms of limitation insofar as side and end are apt as applied to an elongated carton.

The embodiment of my invention illustrated comprises side walls I and 2 and end walls 3 and 4 which are joined by hinging scores 5. The glue flap 6 is hingedly connected at 'I to the side wall i and is adhesively secured to the wall 4 at the opposite end of the blank thus providing a tubular collapsible body. The side walls I and 2 are provided with bottom members 8 hingedly connected thereto at 9 while the end walls 3 and 4 are provided with bottom members ID hingedly connected thereto at II, the hinging being provided by scores. The opposed bottom members 8 are provided with tabs I2 projecting at one end thereof, these tabs overlapping the other bottom member when the carton is in erected position as shown in Fig. 3.

The bottom members II] are provided with coupling or attaching flaps I3 secured thereto along a diagonal hinging line I 4, One of these attaching flaps is adhesively secured to the under side of one of the bottom members 8 and the other to the under side of the other bottom member B, the adhesive areas on the attaching flaps being indicated at I5 in Fig, 6.

In the embodiment illustrated, the side Walls I and 2 of the carton are provided with opposed top or closure members It and Il', respectively, while the end walls 3 and 4 are provided With top members l8 and I9, respectively, the top members I8 are connected by the hinged triangular corner members 29 to the adjacent ends of the top members I6 and IT. The top member I6 is provided with a glue flap 2| which is adhesively secured to the corner member 22 of the top member I9, the top member I9 being secured by the corner member 23 to the adjacent end of the top member H. The top members I6 and I! are provided with handle extensions 24 hingedly secured thereto at 25 and provided with hand openings 26.

The flap extensions 21 are notched at 28 to register with the hand openings 26 when the handle members 24 are brought into side by side relation with their extensions 2'! turned inwardly in side by side relation as shown in Fig. 1. This provides a relatively strong handle even when the carton is formed of light stock. The hand openings are defined by slits 29 leaving flap 30 hinged at 3I to be turned upwardly providing a relatively wide and smooth edge for grasping.

With the glue flap 6 secured to the wall 4 and the bottom flaps I3 secured to the bottom members 8 as described, the carton may be collapsed as shown in Fig. 7. When it is desired to erect the carton, it is merely necessary to press on the opposed edges of the collapsed carton and the parts are automatically swung to erected position as shown in Figs. 1 and 2, Fig. 4 illustratin an intermediate step in the erecting.

The attaching flaps I3 are provided with laterally projecting tongues 32 which project beyond the edges 33 of the bottom members In to provide interlocking edges 34 which interlock with each other as is shown in Figs. 1 and 3 of the drawing with the tongues projecting on the inner sides of the bottom members 8 to coact with the tabs l2 in supporting the bottom in erected posi* tion. The tabs l2 have inclined inner edges 35 with which the rear edges of the attaching flaps l3 coact in guiding the tongues into overlapping relation to the bottom members 8 and into interlocking relation to each other;

The cover members l6, l'l, l8 and l9 o f the embcdim ent shown in Figs. 1' to I, inclusive are connected by the foldable corner members and provide an effective closure and at the samet i me the carton is provided with a handle for convenience in carrying.

I have illustrated and described a practical embodiment of my inventiohand havenqtfillustrated others as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Havin thus described my invention, what I claim as new and desire to secure by Letters Patent is:

IIA collapsible car-ton formed of an integral blank comprising "hingedly connected sid and end walls, opposed sidebottommembershingedly "connected to the side walls and of a length substantially' corresponding to that of the side walls and provided with supporting'tabs' on their oppo- *fsite ends overlapping the opposed side-member when the carton is erected, the inner edgesof said Jt'ab's' being inclinedpa'nd end bottom members .hingedly connected to the end Walls and having ."inclined edges provided with hinged attaching flaps, the attaching flap of one end bottom memher; being secured to the under side of one s'ide bottom member at one end thereoflandrthe at- '1 taching'w flap of the other end bottom member ibeingsecured to the under side of 'theiother side J bottom Y member at the opposite end thereof n whereby the bottom members are automatically swung to erected positionwhen the wallsof the .lcartonareswung from collapsed to erected posi-, 1 1.011, the attaching .fiaps having laterally project- Vjing tongues which are positioned on .theinner side of the bottom members .and theinner edges of, which have interlocking engagementwith each otherwhen thecarton is in fully erected position, i the inclined edges, of. said tabs having camming engagement with said tongues .to momma the r ggriding thereof, gto erected position with ..:the tongues on the inner, sides of .the. side. bottom m mber 2. A collapsible carton formed of an integral blank comprising hingedlyconnected side and endwalls opposed side bottom members hingedly connectedto the side walls and of a length substantially corresponding to that of the side walls and provided with supporting tabs on theirroppo site ends overlapping the opposed side member A when the carton is erected, and end bottom members hingedly connectedto the end wallsand havin inclined edges provided with hinged atf tachingvfiaps, the attaching flap of one end bot- 19m. member being secured to the under side of one :Sid e bottom member at one end thereofand [the attaching flap of'the other end bottom mem- {iber' b'eing'secured tothe under side. of theother jside bottom member at the oppositeend thereof lpwherehy the bottom members are automatically swung toerected position when thewalls of the carton are swung from collapsed to erected position the attachin flaps having laterally projectington les which are positioned on the inner sigle of the bottom members and the inner edges t, of which have interlocking engagement with each pth er w hen the carton is in fully erected position.

3. A col lapsib1e carton formed of an integral blank comprising hingedly connected side and end walls, opposed side bottom members hingedly connected to the side walls and of a length substantially corresponding to that of the side walls 5 and of a width approximately one half that of the erected carton so that the bottom members co mplement each other andlieedge to edge when I; the carton is, erected,;-and end bottom members hingedly connected to the end walls and having 1Q inclined edges provided with hinged attaching flaps, the attaching flap of one end bottom member being secured to the under side of one side ttom member at one end thereof and the atitachiing ilapfor the other end bottom member being securedtethe under side of the other side bottom member at the opposite end thereof wherebysthe bottom members are automatically to erected position when the walls of the carton are swung from collapsed to erected posi- 2Q tion, the attaching flaps having laterally pro- J jetting tongues which are positioned on -the-inner sides of the side bottom members whenthecarton is erectedand-theinner edges of which have in'terlocking engagement with each other when -the.carton is in fully erected position.

4; A collapsiblecartonformed of an interval blank comprising hingedly connected side and end-walls, opposed side bottom members hingedly connected to the side walls and of a-length substantial1y correspondin to thatofl the side walls ,and provided with supporting tabs'on theirloppo- .l v site. .ends. overlapping the opposed side .member when the carton iserected, and end-bottom members hingedlysconnected to therendi walls and 35.havingl.inclined edges provided a with hinged ;at-

taching flaps, the :attaching flap of one=endbot- .tom.membertbeingsecured to the .under side of one sidebottommember at onerend thereof and H -theattaching flap of theother end bottomwmem- 40eber= beinglsecured to .the underside of theother .,side. bottomtmembersat the opposite end thereof 3 whereby; the bottom. members .are automatically swung to erectedpositionwhen the walls-ofthe carton are swung from collapsed to erected positi on, ;the attaching flaps. having laterally protting. tongues which have interlocking engagement with each-,;other. and are disposedson the eumfl rzfiide ofiitheside bottom. members when the carton is in fullycrectedposition. 12. .A-tv qllapsible cartoniormedof an integral blank comprising hingedly connectedssidenand end walls, sopposedside bottom members hingedly connected to the side, walls .andof aslengthsubstantially corresponding. to, that of theside. walls and provided with supporting tabs ,on .their' .op-

posite ends overlapping the opposed sideimember wherr the garton is erected, the inner .edges of said tabs being ,inclinedbandrend .bottom members hingedly connected to the end,walls. and haying inclined edges provided with hinged atr u l dp zfi l @Pfi p n one end botjgnr inbenbeing secured to theunder .side of rde.bottom member at one end thereoi and techies fieR-P sthe Q r nd .b ommemh eing secur edto the under side of the other Susi; epo ttom member at the opposite end thereof wher epy the bottom-members, are automatically swung to erected pqsitionwhen the walls of the carton are swun from collapsed. to erected posi- 9 he attaching flaps having laterally project- .ing tonguesthe-inner edgesof which have inter- ;ilocking engagement with each other when the carton is in 'fullyherected.position, the inclined ,fiii .D sSaid; tabs ,having camming engagement with aid tQIl u s tofacilitatethe guiding-thereof 5 to erected position with the tongues on the inner sides of the side bottom members.

6. A collapsible carton formed of an integral blank comprising hingedly connected side and end walls, opposed side bottom members hingedly connected to the side walls and of a length substantially corresponding to that of the side walls and provided with supporting tabs on their opposite ends overlapping the opposed side member when the carton is erected, and end bottom members hingedly connected to the end Walls and having inclined edges provided with hinged attaching flaps, the attaching flap of one end bottom member being secured to the under side of one side bottom member at one end thereof and the attaching flap of the other end bottom member being secured to the under side of the other side bottom member at the opposite end thereof whereby the bottom members are automatically swung to erected position when the walls of the cart-on are swung from collapsed to erected position, the attaching flaps having laterally projecting tongues, the inner edges of which have interlocking engagement with each other when the carton is in fully erected position with the tongues on the inner sides of the side bottom members.

7. A collapsible carton comprising walls 6 hingedly connected to provide a collapsible tubular body, each of the walls having a bottom member hingedly connected to'the lower edge thereof, one opposed pair of bottom members being provided with supporting tabs at their opposite ends overlapping the other opposed bottom member of the pair when the carton is erected, the other opposed pair of bottom members having inclined edges with attaching flaps hingedly connected thereto, one attaching flap being secured to the under side of one of said first mentioned pair of bottom members and the other to the under side of the other of said first mentioned pair, said attaching flaps having laterally projecting tongues at their outer ends having interlocking engagement and which are positioned on the inner side of the first mentioned pair of bottom members when the carton is erected to coact with said supporting tabs in resisting vertical outward stress on the bottom members.

KENNETH T. BUTTERY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,388,190 Smart Oct. 30, 1945 2,538,860 Buttery Jan. 23, 1951 

